Avril Lavigne Reunites with Ex-Hubby ... for Pasta

12/2/2011 4:45 AM PST BY TMZ STAFF

One year after terminating their marriage ... Avril Lavigne and ex-husband Deryck Whibley came together for an expensive Italian meal at Madeo in Beverly Hills last night.

Avril's new man -- Brody Jenner -- was MIA at the meal, but Avril did bring another female friend ... probably because one-on-ones with exes can get awkward.

After dinner, the group all left in the same car -- and when asked how the reunion went, everybody kept their mouths shut ... and their spitwads to themselves.